Events and the elements that generate or respond to them are important aspects of any event emitting system.

事件、发出事件或响应事件的元素，它们任何事件系统的重要内容。

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The least-cost option to lower the risk is to start now and steadily transform the global energy system over the coming decades to low or zero greenhouse gas-emitting technologies.

降低风险的最小开销方案就是现在启动政策并且在未来数十年内逐步将现在全球能量系统转变为低温室气体排放或零排放的技术。

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The sun, in addition to emitting radiation, emits a stream of ionized particles called the solar wind that affects the Earth and other planets in the solar system.

除了辐射外，太阳还会释放出一种被称之为太阳风的带电粒子流，这种粒子流会对地球以及太阳系中的一些其它星球产生一定的影响。

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Under the scheme, which was established in 2005, permits for emitting CO2 are distributed under a system of national allocations.

BBC: EU 'half way to 2020 emissions target'

The SPET scans allowed the researchers to check how the system was working by injecting a radiation-emitting chemical which seeks out working NMDA receptors.

BBC: NEWS | Health | Schizophrenia chemical flaw clue

Although most economists argue that a carbon tax would be the most efficient solution, Sir Nicholas is neutral between a carbon tax and the other ways of raising the cost of emitting carbon by regulation or a cap-and-trade system.

ECONOMIST: Climate change